Vocabulary Biome: A large community of plants and animals that occupies a distinct region. Terrestrial biomes, typically defined by their climate and dominant vegetation, include grassland, tundra, desert, tropical rainforest, and deciduous and coniferous forests.
DVD player. A DVD player is a device that plays discs produced under both the DVD-Video and DVD-Audio technical standards, two different and incompatible standards. Some manufacturers originally announced that DVD players would be available as early as the middle of 1996. These predictions were woefully optimistic.
Out of these two most popular ones are DVD-R and DVD-RW. Both allow users to record and store media files such as music or movies and run on all devices with DVD drives. The major difference between them lies in the number of times they can be used. Whereas DVD-R is known as readable DVD, DVD-RW is a rewritable DVD. This means that you can store files only once in a DVD-R and cannot erase and record another file on it, DVD-RW allows the user to erase and record information multiple number of times. Amazingly, the quality of modern DVD-RW is such that one can record and reuse them almost a thousand numbers of times.